Grinding and dressing machine for castings.



B.T6TH. GRINDING AND DRESSING MACHINE FOR GASTINGS.

APPLIOATION FILED DBO. 29.1910.

Patented Mar.21,1911.

I .2 SHEETS-SHEET 1.

B.TOTH- GRINDING AND DRESSING MACHINE FOR GASTINGS.

APPLIOATION FILED D'E0.29.1910.

Patented Mar. 21

2 SHEETS-SHEET 8.

Fla, 2

WITNESSES .Bla T6171 I TH: NORRIS ERs ca., wasumcwu, n. c.

FFTQE.

BELA TOTI-I, or CLEVELAND, OHIO.

To all whom it may concern:

Be it known that I, BiiLA Torn, a subject of the King of Hungary,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Grinding and DressingMachines for Castings, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to a grinding and dressing machine for castings,and the primary object of my invention is to provide a machine withmeans as will be hereinafter set forth for removing the rough edges,irregularities, and incrustations from molded articles, particularlywheels, the removal of the irregularities being expeditiously andeconomically accomplished, particularly in connection with largecastings.

A further object of the invention to provide a machine of the above typeembodying novel means for shifting and reseating a piece of emery clothor other abrasire material whereby a wheel can be easily ground ordressed and placed in a perfect condition.

I attain the above objects by a mechanical construction that will behereinafter specifically described and then claimed. and reference willnow be had to the drawings, wherein Figure 1 is a perspective viewshowing two sides of the machine, and Fig. 2 is a similar viewillustrating the other sides of the machine.

A machine in accordance with this invention embodies a base plate 1provided with oppositely disposed standards 2 and 3 connected by abrace 1. The standard 3 is of a greater height than the standard 2 andis provided with a lateral extension 5 and guides 6. The lateralextension supports a housing 7 and arranged in said housing is a movablebearing block 8, said block extending through an opening providedtherefor in the extension 5 and having the lower end thereof providedwith a right angular extension 9 extending through an opening 10provided therefor in the standard 3. The right angular extension 9supports a revoluble roller 11, the object of which will presentlyappear.

The movement of the bearing block 8 within the housing 7 is through themedium of a screw 12 mounted in the top of said Specification of LettersPatent.

Application filed December 29, 1910.

Patented Mar. 21, 1911.

Serial No. 599,848.

8 is a shaft 13 retained therein by collars 14. One end of the shaft hasa wheel 15 and detachably mounted upon the opposite end of the shaft bya nut 16 or other fastening means is the cast wheel 17 to be dressed bythe machine. The wheel 15 is provided with a radially disposed fixed arm18 and adjustably connected to the lower end of said arm by a pin 19 isa link 20. The link is pivotally connected by a pin 21 to the upper endof a lever 22 fulcrumed, as at 23, upon the edge of the standard 3. Thelower end of the lever 2 is pivotally connected by a pin 24 to a pitman25 and said pitman is pivotally connected. as at 26, to a wheel 27mounted upon a shaft 28 revolubly supported by the upper end of thestandard 2. Mounted upon the shaft 28 is a belt wheel 29 and passingover said belt wheel is a twisted belt 30, which also passes over asmall belt wheel 31 mounted upon a shaft 32 journaled in bearings 33,carried by the standards 2 and 3 adjacent to the base plate 1. The shaft32 has a small pulley 34c and over this pulley passes a belt 35 whichalso passes over av large pulley 36 mounted upon a driven shaft 37journaled in bearings 38, carried by the base plate 1; the shaft 37being driven by a motor or other suitable source of power.

Journaled in the standard 3 is a shaft 39 and mounted upon said shaft isa large wheel 10 having the edge thereof scalloped or toothed, as at4:1, to engage the roller 11. Fixed to the large wheel e0, as at 42, isan arm 43 and adjustably connected to said arm by a pin 4A is the end ofthe link 45. The link 15 is pivotally connected by a pin 4:6 to theupper end of a lever 47 fulcinmed upon the side of the standard 3, as at48. The lower end of the lever 4:7 is pivotally connected by a pin 49 toa pitman 50 and said pitman is pivotally mounted upon the wrist pin 51of a Wheel 52 mounted upon the end of the driven shaft 37 The base plate1 is provided with an additional bearing 53 having an upright 5 1 for atapering guide head The tapering guide head is provided with guides 56for movable strap holders 57 and pivotally connected to the lower endsof said holders are arms 58 pivotally connected by pins 59 to the endsof the cross heads 60 fulcrumed by a in 61 in the upper end of thebearing 53. The cross head 60 is pivotally connected by housing, andournaled in the bearing block 1 a pin 61 to a pitman 62 and said pitmanhas the lower end thereof pivotally mounted upon a wrist pin 63 carriedby a wheel (34 mounted upon a shaft The shaft is journaled in bearings66, carried by the base plate 1, and upon said shaft between thebearings is mounted a small pulley 67. Over this small pulley passes abelt (58 that also passes over a large pulley 69 mounted upon the shaft32.

Detachably connected to the strap holders 57 by pins are the lower endsof a strap 71, said strap being made of emery cloth or an abrasivematerial. This strap is adapted to extend upwardly over the rim of thecast wheel 17 and remove irregularities, as designated 7 2 from the rimof said Wheel.

'lhrough the medium of the driven shaft 37, belt 35, shaft 32, belt 30,shaft 28, pitman 25, lever 22, link 20, and the arm 18 of the wheel 15,the shaft 13 will be rocked in the bearing block 8, the rocking movementof the shaft being suliicient to move the cast wheel 17 whereby thestrap 71 will contact wit-h that portion of the wheel rim between two ofthe spokes of the wheel. During this rocking movement of the shaft 13the bearing block 8 is vertically reciprocated through the medium of theright angular extension 9, revoluble roller 11, scalloped wheel 4-0,shaft 39, arm 13, link -15, fulcrumed lever 47, pitman 50, wheel 52, andthe driven shaft 37 The reciprocatory movement of the bearing block 8raises and lowers the cast wheel during the rocking movement thereof,and it is this reciprocatory movement that allows the strap 71 to seatand unseat itself upon the rim of the cast wheel 17. Simultaneous withthe rocking and reciprocatory movement of the cast wheel 17, the strap71 is shifted back and forth over the rim of the wheel through themedium of the strap holders 57, arms 58, cross heads 60, pitman (51,wheels 64, shaft 65, belt 68, shaft 82, belt 35, and the driven shaft37. The three movements of the machine contribute toward a rapid andeconomical reduction or removal of the irregularities upon the innerside of the rim of the cast wheel 17, the rim of the wheel being shiftedwhereby the strap 17 can contact with the rough surface of the same,besides preventing the strap from being continuously worn in one place.

It is thought that the operation and utility of the machine will beapparent without further description, and while in the drawings there isillustrated a preferred embodiment of the invention it is to beunderstood that the structural elements are susceptible to such changesas fall within the scope of the appended claims.

\Vhat I claim, is:

1. A machine of the type described embodying standards, a housingcarried by one of said standards, a reciprocatory bearing block movablymounted in said housing, a rock shaft journaled in said bearing blockand adapted to support a wheel, a guide head, strap holders movablymounted upon said guide head, a strap having the ends thereof connectedto said holders and adapted to pass through and upon the rim of saidwheel, means including a scalloped wheel adapted to reciprocate saidbearing block, means including a rock head adapted to move said strapholders, and means including a fulcrumed lever adapted to rock the shaftof said bearing block.

2. A machine of the type described embodying standards, a housingcarried by one of said standards, a reciprocatory bearing blockmovablymounted in said housing, a rock shaft journaled in said bearing blockand adapted to support a piece of work, means carried by said housingand adapted to limit the movement of said reciprocatory bearing block, aguide head, strap holders movably supported by said guide head, a straphaving the ends thereof connected to said holders and adapted to passthrough said piece of work, means including a sealloped wheel adapted toreciprocate said bearing block, means including a rock head adapted toshift said strap holders, means including a fulcrumed lever adapted torock the shaft of said bearing block, and means including a driven shaftadapted to actuate the last three mentioned means, substantially asdescribed.

In testimony whereof I affix my signature in the presence of twowitnesses.

KARL Person, ELEMER MASZTICS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

